How to write a resignation letter that's effective immediately? Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template.In this article, we'll provide a detailed resignation letter example to help you leave your current position on good terms. This resignation letter sample provides your employer with a letter for your file and also suggests that you've done everything you can to remain professional. Sample resignation letter. A successful immediate resignation letter follows a standard business letter format. Below is an example of an immediate resignation letter from an employee who needed to leave their position due to severe work-related stress. In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. Smith, I am writing this letter to formally announce my resignation from my job position effective immediately on August 25. Please accept this letter as my formal resignation.